Flexible shoe sole



FIG. 1 is a bottom plan view of a flexible shoe sole showing our new design;

FIG. 2 is a left side elevational view, the right side being a mirror image;

FIG. 3 is a cross-sectional view along line 3--3 in FIG. 1; and,

FIG. 4 is an enlarged partial side elevational view of the heel taken along line 4-4 in FIG. 1. 

The ornamental design for a flexible shoe sole, as shown and described. 